Hi there!
We are a tech start-up that develops our own in-house apps and websites. We have been coding our own iOS and Android apps for the past year. As such, you can be assured that we are very familiar with the full process of developing your app for you.
(Our own app has product listings, Facebook/Google log-in, OTP phone authentication, camera functions, geolocation tracking, messaging, reviews, social media sharing etc.)
For your project, we will use a similar methodology that we employ ourselves. InVision/Mockingbot for prototyping the UI, mapping the user experience, coding using Objective and Java. Databases using SQL, AWS etc. So it is no problem ensuring cross-platform compatibility.
We'll be in close contact throughout the whole process via Skype/WhatsApp/Email, so communication won’t be a problem. After initial concept, we will come up with the storyboard, then the wireframe designs. After we determine what functionalities are needed, we then proceed to code it.
We are currently building an enterprise app for a private company that digitizes their day-to-day job functions and helps automate their work.
PS: drop me a pm and we can set up a quick skype chat to discuss further
Really looking forward to working with you. Cheers!
Ck